When you look at the wealth redistribution and social justice in longstanding islamic socialism, it becomes apparent that radical leftists are natural allies of radical islam.
They’re saying the same things and their targets are converging.
I can see some kind of idiosyncratic logic in it, but I think all the two of them together will be able to do is to destroy, not create or even maintain anything workable. Once they’ve torn down everything they can, if they’re allowed to, they’ll just turn on each other, and I doubt to the left’s purpose or profit. Things like the so called feminism, multiculturalism, and tolerance of deviant sexuality are not high on any devout Mohammadan agenda, except as things to suppress and crush in the name of the one God, one final prophet, one caliph, one caliphate, one belief, one idea, one vote, once.